Early autumn · Weather & things to do
St. Augustine in September
St. Augustine edges cooler than August, with highs of 84°F (29°C), lows of 76°F (25°C) and about 6.6 in (168 mm) of rain.
Our comfort score puts it mid-table at 61/100, 9th of 12.
- Avg high
- 84°F (29°C)
- Avg low
- 76°F (25°C)
- Rain
- 6.6 in (168 mm)
- Humidity
- 81%
- Cloud cover
- 56%
- Daylight
- ~12 h 10 min
- Comfort score
- 61/100 · Good
What September feels like
Days are warm, averaging 84°F (29°C).
Even at night it stays warm, around 76°F (25°C).
Humidity averages 81%, so the air feels sticky and the heat feels stronger than the thermometer says.
Expect regular rain: about 6.6 in (168 mm) falls in the month.
Plan around September
September sits mid-table; the best months are November – April.
- Comfort improves from 51/100 in August to 61/100.
- Our St. Augustine & Amelia Island route is planned for Late Nov – Jan, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clotheshighs average 84°F
- Quick-dry fabrics81% average humidity
- Rain jacket and waterproof shoesfrequent rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in St. Augustine in September
Wet days call for a roof: these picks favor sit-down and indoor stops, plus a few for drier spells.
Castillo de San Marcos
Spanish coquina-stone fort completed in 1695, the oldest masonry fort in the continental United States, on Matanzas Bay.
St. Augustine Distillery
Craft distillery in a restored 1907 ice plant, with free guided tours, tastings and a cocktail bar upstairs.
Why now A sit-down stop to wait out showers in a month with 6.6 in of rain.
St. Augustine Lighthouse & Maritime Museum
Black-and-white spiral lighthouse from 1874 on Anastasia Island; 219 steps lead to views over the bay and old town.
Why now An indoor-leaning stop for a month with 6.6 in of rain.
Lightner Museum
Gilded Age collections in Flagler's former Hotel Alcazar, built around a palm courtyard and the hotel's old indoor pool.
Why now A good rainy-day backup in September.
Columbia Restaurant
St. Augustine branch of Florida's oldest restaurant family, serving Spanish and Cuban dishes on St. George Street since 1983.
Nearby in September
- Jacksonville Beach in September~28 mi · highs 82°F, 5.4 in rain · similar daytime temperatures, drier
- Downtown Jacksonville & Southbank in September~36 mi · highs 86°F, 5.8 in rain · 1°C (3°F) warmer by day, drier
- Amelia Island in September~54 mi · highs 82°F, 5.4 in rain · similar daytime temperatures, drier
- Winter Park in September~90 mi · highs 85°F, 6.9 in rain · 1°C (2°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
St. Augustine in September: quick answers
Is September a good time to visit St. Augustine?
It's middling, scoring 61/100. The best months are November – April, at up to 88. Expect highs of 84°F (29°C) and 6.6 in (168 mm) of rain.
How hot is St. Augustine in September?
Average highs are 84°F (29°C) and average lows 76°F (25°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in St. Augustine in September?
Yes: about 6.6 in (168 mm) of rain falls across September on average, the 3rd-wettest month of the year. The annual total is about 53.9 in (1370 mm).
What should I pack for St. Augustine in September?
Bring light, breathable clothes (highs average 84°F), quick-dry fabrics (81% average humidity), rain jacket and waterproof shoes (frequent rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on St. Augustine
Planning St. Augustine in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.